where afghanistan will be secured by its own people again. its sovereignty will be defended by them and we will defend its integrity. >> sreenivasan: the transition in afghanistan takes place as the pentagon navigates budget cuts. in washington, the nominee for head of the joint chiefs of staff discussed what he called a "new fiscal reality," and warned against tightening the purse strings by too much. president obama has called for $400 billion in military spending cuts over 12 years. during an exchange with republican senator john mccain, army general martin dempsey said proposals to cut more than that would be dangerous. >> what would an $800 to a trillion dollar cut in defense spending over the next ten years do to our readiness, general? >> based on the difficulty of achieving the $400 billion cut, i believe $800 would be extraordinarily difficult and very high risk. >> sreenivasan: dempsey added the pentagon is currently reviewing how to make the cuts the obama administration has requested, and will present those options to the presiden